Imaging and quantifying perpendicular exchange biased systems by soft x-ray holography and spectroscopy

被引：9
作者：
Tieg, C. [1 ]
Jimenez, E. [2 ,3 ]
Camarero, J. [2 ,3 ,4 ]
Vogel, J. [5 ,6 ]
Arm, C. [7 ]
Rodmacq, B. [8 ]
Gautier, E. [8 ]
Auffret, S. [8 ]
Delaup, B. [8 ]
Gaudin, G. [8 ]
Dieny, B. [8 ]
Miranda, R. [2 ,3 ,4 ]
机构：
[1] European Synchrotron Radiat Facil, F-38043 Grenoble, France
[2] Univ Autonoma Madrid, Dept Fis Mat Condensada, E-28049 Madrid, Spain
[3] Univ Autonoma Madrid, Inst Nicolas Cabrera, E-28049 Madrid, Spain
[4] Campus Univ Autonoma Madrid, Inst Madrileno Estudios Avanzados Nanocienca, IMDEA Nanociencia, Madrid 28049, Spain
[5] CNRS, Inst Neel, F-38042 Grenoble, France
[6] UJF, F-38042 Grenoble, France
[7] CEA, LEMMA, F-38054 Grenoble, France
[8] INAC CEA, CEA CNRS UJF INPG, SPINTEC, F-38054 Grenoble, France
来源：
APPLIED PHYSICS LETTERS | 2010年 / 96卷 / 07期
关键词：
atomic force microscopy; exchange interactions (electron); ferromagnetic-antiferromagnetic transitions; holography; magnetic fields; magnetic moments; magnetisation reversal; X-ray spectroscopy;
D O I：
10.1063/1.3291111
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The magnetic properties of perpendicular exchange biased ferromagnetic (FM)/antiferromagnetic (AFM) [Pt/Co](n)/IrMn systems were investigated by a new set-up combining element-selective soft x-ray holography and spectroscopy measurements. The holography experiments allow imaging the magnetization reversal of an exchange biased FM layer with an equivalent Co thickness below 5 nm in real space and in external magnetic fields, and provide direct evidence of its asymmetric nature. From the spectroscopy analysis, we have quantified the unpinned (pinned) uncompensated AFM moments, providing direct evidence of its parallel (antiparallel) alignment with respect to the FM moments.
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